Staff: Mentor

If the voltage and current are in phase (your load is resistive only), then the power is just P = V * I, independent of frequency.

So you are saying that a wire carrying 100 volts at 60Hz has the same amount of power as a wire carrying 100 volts at 120Hz or 1kHz (assuming the same load in all three cases)? I heard somewhere that if you double the frequency of the wave, that the power is 4 times as much, is that true?